x^2-3x-10x^3=0

Solution for x^2-3x-10x^3=0 equation:

Simplifying
x2 + -3x + -10x3 = 0

Reorder the terms:
-3x + x2 + -10x3 = 0

Solving
-3x + x2 + -10x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-3 + x + -10x2) = 0

Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

Move all terms containing x to the left, all other terms to the right.

Simplifying
x = 0
Subproblem 2
Set the factor '(-3 + x + -10x2)' equal to zero and attempt to solve:

Simplifying
-3 + x + -10x2 = 0

Solving
-3 + x + -10x2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
0.3 + -0.1x + x2 = 0

Move the constant term to the right:

Add '-0.3' to each side of the equation.
0.3 + -0.1x + -0.3 + x2 = 0 + -0.3

Reorder the terms:
0.3 + -0.3 + -0.1x + x2 = 0 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + -0.1x + x2 = 0 + -0.3
-0.1x + x2 = 0 + -0.3

Combine like terms: 0 + -0.3 = -0.3
-0.1x + x2 = -0.3

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.1x + 0.25 + x2 = -0.3 + 0.25

Reorder the terms:
0.25 + -0.1x + x2 = -0.3 + 0.25

Combine like terms: -0.3 + 0.25 = -0.05
0.25 + -0.1x + x2 = -0.05

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.05

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
x = {0}